phase-audit

# Phase Audit > **Style:** Mode-B-lite. ## Purpose After a phase of multiple slices is implemented, run an **independent** audit (a fresh sub-agent with no implementation bias) over EVERY slice — verifying each against the spec/decisions and checking cross-slice consistency — before the phase is signed off. Catches drift that per-slice, in-session review misses. ## When to invoke - A phase with 2+ slices is implemented and awaiting sign-off. - Operator says "audit the phase", "review all slices", "independent audit", "did we miss anything across the phase". - Before flipping a large spec DRAFT→DONE. ## Do not invoke when - Single change / single diff → use `code-review`. - Security-specific concern → use `security-permissions-review`. - Phase not yet implemented (nothing to audit). - A trivial one-slice phase (per-slice review suffices). ## Required inputs | Input | Where it lives | If missing | |---|---|---| | Spec + decisions | `docs/specs/<slug>/` | stop; cannot audit without the target | | Slice list + SHAs | `docs/specs/<slug>/tasks.md` | derive from git log of the phase range | | Implemented diff | `git diff <phase-start>..HEAD` | stop | ## Procedure 1. **Scope.** Identify the phase's slices and their commit range from `tasks.md` / git log. 2. **Delegate (independent).** Per `flow-skills/task-delegation/SKILL.md`, spawn a fresh sub-agent (read-only) so the audit is unbiased by the implementing session. 3. **Per-slice audit.** For each slice: does the diff sat...